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Does lowering of cholesterol levels influence functional properties of large arteries?

  • Pharmacodynamics
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Abstract

Hypercholesterolaemia is a risk factor for atherosclerosis and induces endothelial dysfunction. Endothelial dysfunction may increase vascular tone and arterial stiffness and as a consequence may decrease arterial distensibility (DC) and arterial compliance (CC). It is hypothesized that lipid-lowering therapy may enhance DC and CC. Therefore, the present study investigates the effect of lipid-lowering therapy with pravastatin on the haemodynamics, DC and CC of the elastic common carotid artery (CCA), and the muscular femoral (FA) and brachial (BA) arteries in patients with primary hypercholesterolaemia. After an 8-week placebo run-in period with a low-cholesterol diet, 19 patients with total cholesterol concentrations of between 6.5 and 9.0 mmol·l−1 and triglyceride concentrations <4 mmol·l−1 entered a double-blind placebo controlled crossover study. Patients received pravastatin 40 mg o.d. or placebo, each for 8 weeks. Throughout the study the lipid-lowering diet was continued. With pravastatin, total cholesterol, low-density lipoprotein cholesterol (LDL-C) and triglycerides were decreased (total cholesterol 26%, LDL-C 35%, triglycerides 16%), while high-density lipoprotein cholesterol (HDL-C) was not changed. Other laboratory values remained within the normal range. Blood pressure, heart rate, cardiac function and systemic vascular resistance were not influenced by pravastatin. Compared to placebo, diameter, distensibility and compliance of all arteries were not statistically significantly changed with pravastatin. These data suggest that, in patients with mild to moderate primary hypercholesterolaemia, short-term lowering of plasma cholesterol does not alter the haemodynamics and vessel wall properties of large arteries.

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Authors and Affiliations

  1. Department of Pharmacology, Cardiovascular Research Institute Maastricht, University of Limburg, PO Box 616, 6200 MD, Maastricht, The Netherlands

    M. Kool, H. Struijker Boudier & L. Van Bortel

  2. Departments of Internal Medicine and Cardiology, De Wever Hospital, Heerlen, The Netherlands

    F. Lustermans & H. Kragten

  3. Department of Biophysics, Cardiovascular Research Institute Maastricht, University of Limburg, The Netherlands

    A. Hoeks

  4. Department of Physiology, Cardiovascular Research Institute Maastricht, University of Limburg, The Netherlands

    R. Reneman

  5. BMS Medical Department, Woerden, The Netherlands

    H. Rila & I. Hoogendam

Authors
  1. M. Kool
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  2. H. Struijker Boudier
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  4. F. Lustermans
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  5. H. Kragten
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  6. A. Hoeks
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  7. R. Reneman
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  8. H. Rila
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  9. I. Hoogendam
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Kool, M., Boudier, H.S., Van Bortel, L. et al. Does lowering of cholesterol levels influence functional properties of large arteries?. Eur J Clin Pharmacol 48, 217–223 (1995). https://doi.org/10.1007/BF00198301

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  • DOI: https://doi.org/10.1007/BF00198301

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